Re: Dynamic Web Page

David L. Kosenko wrote: > > Ben Truong wrote: > > > > I'd like to develop an application that would access database for the > > information and post it on the client web page. In addtion, if the > > information in the database change, I want the new change > > automatically 'push out' to the clients dynamically. Does anyone > > know whether Informix or any third party products have the tool to > > broadcast data from database to the Web client dynamically in that > > fashion?. > > The notion of pushing changes out to the web automatically seems > misplaced to me. Why do you need to push anything out? Why not > have client requests go directly to the database for the info? > Ahem, uhm there are several applications which you may want to do this. I always use the example of a stock broker / trading desk application. Imagine yourself in a large brokerage office. Your task is to design a system to allow brokers to pull up client portfolios in one window and in the same window show the current trading prices in REAL TIME. How would you do this? (This is a rhetorical question. ;-) Or, in another window you want to show the ticker for what ever market feed you have in REAL TIME. Since you have lots of brokers, it doesn't make sense of pulling the data from the database. It makes sense to push it. Look at TIB, Teknekron Information Bus from Teknekron Trading Systems (Now owned by Reuters.) Its a publish / subscribe method of doing this. There was an article in ACM around 1993 -1994 on this. Does this make sense or have I been *hitting* the bottle again ? -Mikey